trailer



(No Model.)

0. R. TRAXLER.

HOISTING APPARATUS.

:No. 363,097 Patented May 17, 1887.

Uirnn STATES Arnr rricn.

CISCO R. TRAXLER, OF HASTINGS, NEBRASKA.

HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 363,097, dated lday1'7, 1887.

Application filed September 1, 1886. Serial No. 212,429. (No model.)

To all whom it may concern.-

Be it known that I, Crsoo R. TRAXLER, a citizen of the United States,residing at Hastings, in the county of Adams and State of Nebraska, haveinvented a new and useful improvement in Hoisting Apparatus, of whichthe following is a specification.

My invention relates to an improvement in hoisting-machines; and itconsists in the peculiar construction and combination of devices, thatwill be more fully set forth hereinafter, and particularly pointed outin the claims.

I11 the drawings, Figure l is a front elevation of a hoisting-machineembodying my improvements. Fig. 2 is a side elevation of the same. Fig.3 is partly a front elevation and partly a vertical section on the linea: a: of Fig.

7 2. Fig. dis a verticaltransverse sectional view taken on the line y gof Fig. 3, the quadrantarm being omitted. Fig. 5 is a detailed sectionalView taken on the line .2 z of Fig. 4.

A. represents a pair of vertical standards, in which is j ournaled atransverse shaft, B, that is provided with a drum, 0. On one end of theshaft, which projects beyond one of the standards A, is rigidly secureda head, D, comprising a friction-pulley, E, having a sleeve, F,projecting from its inner side. The said sleeve F is reduced at itsinner end, thereby forming a bearing, G, which is of less diameter thanthe adjacent bearing H. Notches I or recesses are made in the face ofeach hearing, G and 1-1, and in the said notches or recesses are securedpawls K and L. The pawls K are secured to the bearing H, and the pawls Lare secured to the bearing G, and the said pawls K and L extend inopposite directions. On the bearing H is journaled a spurpinion, M,which is provided with interior ratchet teeth adapted to be engaged bythe pawls K when the pinion is rotated in the direction indicated by thearrow in Fig. 3. On the bearing G is journaled a similar spur-pinion, N,which is also provided with interior ratchetteeth, which are adapted tobe engaged by the pawls L when the said pinion is rotated in the reversedirection to that indicated by the arrow in Fig. 3.

0 represents a bracket, which is bolted to one of j the standards A at asuitable distance above the projecting end of the shaft and out of linevertically therewith. This bracket is provided with ahorizontallyproieeting spindle, O, on which is pivoted a rockingquadi'antarni, P. The said arm is provided near its curved side with asegmental slot, R. Upon the lower side of said slot is asegmentalrackbar, S, the teeth of which are adapted to e11- gage the pinion N. Onthe upper side of the segmental slot is a rack-bar, T, which also formsa segment, and the teeth of which engage the pinion M on the upper sideof the latter. The lower end of the slot R is plane, and is not providedwith teeth on either side.

U represents a brakeblock, which is formed with the quadrantarm andextends outwardly over the lower end of the slot R, and is adapted tobear upon the frietionpulley E. ()n the upper side of the quadrant-armis formed a triangular arm, V, which is provided with a curved slot, V,drawn from the center of an opening, X, that is made in the arm P.

Y represents a hand-lever, which is fulcru med on a bolt, Z, thatprojects through the opening X. A bolt, Z, extends through the slot Vand through the hand-lever Y, and is provided with a clainpiiignut, Z

From the foregoing description it will be readily understood that thehand-lever Y is permitted to move independently of the quad rant-arm fora distance corresponding to the radius of the curved slot W.

The operation of my invention is as follows: The rope or chain to whichthe weight to be elevated is connected is attached to the drum 0. Inorder to rotate the said drum, so as to cause it to wind up the rope andelevate the weight, the hand-lever Y is grasped and 0s cillated througha portion of a circle, thereby causing the quadrant-arm to alsooscillate. \Vhen the said arm moves in the direction indicated by thearrow a in Fig. 3,. the segment-raek T engages the pinion M and rotatesit idly on the bearing H, and the segmentrack S engages the pinion N androtates it in the opposite direction from the pinion M, thereby causingthe pawls L to engage the said pinion N and cause it to communicate itsrotation to the shaft B, carrying the drum, thereby rotating the latter.On the reverse movement of the quadrant-arm the rotation of the pinionsis reversed, and the pinion M is engaged by the pawls K, therebyimparting its movement to the shaft B, while the pinion N slips idlyover its pawls L. The pinions M and N are thus rotated si multaneouslyin opposite directions, and their motion is reversed at each movementof the quadrant-arm; but the shaft B is rotated constantly in the samedirection, being alternately engaged by the pini'ons M and N. If it bedesired to lower the weight, the hand-lever Y is moved upwardly, therebythrowing the pinions into the plain end of the slot R, which is notprovided with rack-teeth, and the pinions are thus disengaged from thequadrant-arm, and the shaft B is free to rotate in the reverse directionfrom that previously described. In order to regulate the speed at whichthe weight descends, the handlever Y is moved upwardly to the extremelimit o'fits movement, thereby causing the brake-bloek U to bear uponthe pulley 1 and by frictional contact therewith prevent the shaft fromrotating too rapidly.

Having thus described my invention, I claim- 1. The combination of theshaft 13, having the two series of pawls extending in oppositedirections, and provided with the friction-put ley E, the'pinionsjournaled on the said shaft and adapted to be engaged by the pawls, and

I the oscillating arm having the segmental rack engaging the pinions onopposite sides, the said oscillating arm being provided with thebrake-block adapted to bear upon the friction-pulley when the pinionsare not engaged by the rack-bars, for the purpose set forth,substantially as described.

2. The combination of the shaft B, having the friction-pulley E and thetwo series of pawls extending in opposite directions, the pinions journaled on the said shaft and adapted to be engaged by the said pawls,the rocking quadrant-arm having the segmental rack-bars adapted toengage opposite sides of the pinions, the said quadrant-arm beingprovided with the brake-block adapted to engage the friction pulley whenthe segment rack-bars are not engaged by the pinion, and the handlcverY, pivoted to the quadrant-arm and movable independently thereof for aslight dis tance, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature-in presence of two witnesses. V

' GISCO R. TRAXLER.

\Vitnesses:

L. A. ROYCE, C. H. AINGTON.

